A system includes an afterburner including an afterburner duct that defines an afterburner channel. The afterburner receives input gas from a jet engine into the channel and outputs an exhaust gas resulting from combustion of fuel. The system includes multiple resonators electromagnetically coupled to at least one radio-frequency power source. Each resonator has a resonant wavelength, first and second conductors, and a dielectric between those conductors. Each resonator is configured such that, when that resonator is excited by the power source with a signal having a wavelength proximate to an odd-integer multiple of one-quarter of that resonator's resonant wavelength, that resonator provides within the afterburner electromagnetic waves and/or a plasma corona proximate to that resonator. A resonator also includes a fuel conduit having a fuel outlet configured to output fuel for mixing with the input gas, and at least a portion of that resonator is arranged proximate to the dielectric.

An example system can include a combustion chamber of a jet engine, a radio-frequency power source, a resonator, and a fuel conduit. The resonator can be electromagnetically coupled to the radio-frequency power source and have a resonant wavelength. Further, the resonator can include (i) a first conductor, (ii), a second conductor, and (iii) a dielectric between the first conductor and the second conductor. The resonator can be configured such that, when the resonator is excited by the radio-frequency power source with a signal having a wavelength proximate to an odd-integer multiple of one-quarter of the resonant wavelength, the resonator provides at least one of a plasma corona or electromagnetic waves. The fuel conduit can be configured to couple to a fuel source and have a fuel outlet for expelling fuel into a combustion zone of the combustion chamber. A portion of the fuel conduit is arranged proximate to the dielectric.

An example system and corresponding method can include a combustion chamber of a power-generation gas turbine, a radio-frequency power source, and a resonator. The combustion chamber can include a liner defining a combustion zone, and include a fuel inlet configured to introduce fuel into the combustion zone. The resonator can have a resonant wavelength and include: a first conductor, a second conductor, a dielectric, and an electrode coupled to the first conductor. The resonator can be configured such that, when the resonator is excited by the radio-frequency power source with a signal having a wavelength proximate to an odd-integer multiple of one-quarter of the resonant wavelength, the resonator provides a plasma corona in the combustion zone. The controller can be configured to cause the radio-frequency power source to excite the resonator with the signal so as to provide the plasma corona.

A device for generating plasma (1) comprises a high voltage electrode (10) as well as at least one external electrode (11, 12), wherein the high voltage electrode (10) at least in one coordinate direction (34) is arranged between conductive material of at least one external electrode (11, 12). The high voltage electrode (10) is covered with a dielectric (21) at least one side facing an external electrode (11, 12). Between the respective external electrode (11, 12) and the high voltage electrode (10) over its longitudinal extension at least one spacer element (20) is present, which at least in the region of its arrangement electrically insulates the respective external electrode (11,12) from the high voltage electrode (10) and which positions the respective external electrode (11, 12) at a constant distance from the high voltage electrode (10), wherein the spacer element is a gas-permeable foil.

A system is provided for generating plasma within narrow diameter tubes, e.g., tubes with an inner diameter of less than 1 millimeter. The system may comprise the tube, a nozzle connected to at least one end of the tube configured to supply a gas into the interior of the tube at atmospheric pressure, at least one ring-shaped anode electrode and configured to surround an outer surface of the tube, at least one ring-shaped cathode electrode spaced apart from the anode electrode along the longitudinal axis and configured to surround the outer surface of the tube, and a voltage source connected to the at least one anode electrode. When activated, the system is configured to generate an electric field between the electrodes which ignites a plasma within the gas in the interior of the tube.

Embodiments relate to a plasma generator including a dielectric layer elongated in a longitudinal direction that extends 0.01 mm-2 mm in a thickness direction perpendicular to the longitudinal direction. The dielectric layer defines first and second planar surfaces that are separated in the thickness direction. A first electrode is disposed along a first portion of the first planar surface. A second electrode is disposed along a second portion of the second planar surface, such that at least a part of the first and second portions are separated in the longitudinal direction of the dielectric layer. A power supply is configured to supply electrical power to the first and second electrodes at a predetermined voltage and frequency, wherein plasma is generated adjacent each of the first and second electrodes and along the first and second surfaces of the dielectric layer other than the first and second portions.

The present invention provides various systems, methods and apparatuses for recovering mining fluids, providing enhanced oil recovery and treating produced water. Plasma arc torches and electrolysis cells are used in various combinations. The plasma arc torch includes a cylindrical vessel, a first tangential inlet/outlet connected to or proximate to a first end, a second tangential inlet/outlet connected to or proximate to a second end, an electrode housing connected to the first end such that a first electrode is (a) aligned with a longitudinal axis of the cylindrical vessel, and (b) extends into the cylindrical vessel, and a hollow electrode nozzle is connected to the second end such that the hollow electrode nozzle is aligned with the longitudinal axis, the hollow electrode nozzle is partially disposed within the cylindrical vessel and outside the cylindrical vessel.

Apparatus and method for the plasma treatment of surfaces with a first electrode and a second electrode, the apparatus and method comprises an alternating voltage source between the first and second electrodes, and an electrical field forming, at least between the first and second electrodes, an effective area, which is arranged in front of the first electrode and in which the surface to be treated can be positioned, wherein the second electrode is arranged closer to the effective area than the first electrode. The apparatus and method provides at least one process gas channel for at least one stream of process gas with at least one outlet at the first electrode, wherein the at least one outlet points in the direction of the effective area, the at least one stream of process gas impinges on the electrical field, the electrical field converts the at least one stream of process gas into a stream of plasma, and the stream of plasma impinges on the effective area.

A linear flexible plasma generator having a function of cooling and temperature control. More efficient power control is possible, since a temperature of an electrode itself can be controlled in a state when plasma is discharged. In addition, since a temperature of the electrode surface can be decreased, use for the purposes of sterilization, neutralization, treatment, beauty treatment, and so on is possible.

A thermal management system (5) for a magnetoplasmadynamic thruster (10) for a space craft is disclosed. The thermal management system (5) is located between at least one superconducting magnet (120) and a plasma discharge unit (15 and comprises a thermal barrier (40, 60) located adjacent to the plasma discharge unit (15), a multilayer insulation (70) located between the thermal barrier (40, 60) and the cryostat insulation (80), and a radiation gap (50) located in the thermal barrier (40, 60).